Electric leakage detection device for low-voltage overhead power distribution network

Abstract

The utility model discloses a low-voltage overhead power distribution network electric leakage inspection device, which comprises a telescopic connecting rod, the top and the bottom of the telescopic connecting rod are respectively connected with a replaceable contact head and a grab handle, the grab handle is provided with an installation groove, a low-voltage test pen is installed in the installation groove, and the low-voltage test pen is electrically connected with the replaceable contact head through a soft copper wire; according to the utility model, the replaceable contact head is arranged at the top of the telescopic connecting rod, and the low-voltage test pen is arranged at the bottom of the telescopic connecting rod, so that detection personnel can perform electric leakage measurement on an overhead line on the ground, whether electric leakage occurs to low-voltage power distribution equipment can be rapidly and visually detected, maintenance personnel do not need to climb high places, the operation danger is reduced, and the working efficiency is improved. The device is convenient to carry and use, and the detection efficiency is improved; and through arrangement of replaceable contact heads with different structures, overhead line measurement in different scenes is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage leakage detection, in particular to a low-voltage overhead distribution network leakage detection device. Background Art

[0002] At present, the power distribution network in rural areas is relatively weak, and leakage often occurs due to old equipment and lines. Rural low-voltage substations are usually overhead lines, and leakage points often occur on the upper armature or guy wire of the pole, which are all located high above the ground. Usually, workers need to climb up the pole to use an electrician's pen to detect leakage, which is time-consuming, labor-intensive and inefficient. The existing traditional electrician's pen has a short effective measurement distance and cannot adapt to the working environment of overhead lines. The contact head of the traditional electrician's pen is straight and cannot be bent. It is difficult to accurately contact the measurement point in the complex environment of overhead lines. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a low-voltage overhead distribution network leakage inspection device, which solves the problem that traditional power inspection requires workers to climb, which easily causes dangerous situations.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-voltage overhead distribution network leakage inspection device, comprising a retractable connecting rod, the top and bottom of the retractable connecting rod are respectively connected to a replaceable contact head and a handle, an installation groove is provided on the handle, a low-voltage test pen is installed in the installation groove, and the low-voltage test pen and the replaceable contact head are electrically connected through a soft copper wire.

[0005] Furthermore, the replaceable contact head includes a Y-shaped metal conductor contact head, a barbed hook-shaped metal conductor contact head, a conical pointed metal conductor contact head and an inverted L-shaped metal conductor contact head; a soft metal filament is welded on the outer end of the inverted L-shaped metal conductor contact head.

[0006] Furthermore, threaded connecting rods are provided at the bottom of the Y-shaped metal conductor contact head, the barbed hook-shaped metal conductor contact head, the conical tip metal conductor contact head and the inverted L-shaped metal conductor contact head.

[0007] Furthermore, the telescopic connecting rod is composed of four sections of round tubes that are movably connected. The four sections of round tubes are all made of lightweight and high-strength fiberglass. The round tube at the top is provided with threads, and the round tube at the bottom is connected to the handle.

[0008] Furthermore, the telescopic connecting rod and the replaceable contact head are connected through a base, and threaded holes are provided at the top and bottom of the base. The base is connected to the round tube at the top of the telescopic connecting rod through the threaded hole at the bottom, and the Y-shaped metal conductor contact head or the barbed metal conductor contact head or the conical pointed metal conductor contact head or the inverted L-shaped metal conductor contact head is connected to the threaded hole at the top of the base through the bottom threaded connecting rod.

[0009] Furthermore, a wire take-up reel is also provided on the telescopic connecting rod.

[0010] Furthermore, copper wire jacks are provided on the top surface of the topmost circular tube of the four sections and on the bottom surface of the bottommost circular tube of the four sections, a conductive copper sheet is provided in the base, the conductive copper sheet connects the threaded holes at the top and bottom of the base, the threaded holes at the top and bottom of the base are all made of conductive materials, and the threaded connecting rods provided at the bottom of the Y-shaped metal conductor contact head, the barbed metal conductor contact head, the conical pointed metal conductor contact head and the inverted L-shaped metal conductor contact head are all made of conductive materials.

[0011] Furthermore, the handle is made of insulating material, and a conductive copper sheet is built into the handle, and the conductive copper sheet connects the low-voltage electrician test pen and the copper wire socket at the bottom of the surface of the bottommost round tube of the four sections of round tubes.

[0012] Compared with the existing technology, the utility model has the following beneficial effects: the utility model installs a replaceable contact head on the top of the retractable connecting rod and a low-voltage test pen on the bottom of the retractable connecting rod, so that the inspection personnel can perform leakage measurement of the overhead line on the ground, and can quickly and intuitively check whether the low-voltage distribution equipment has leakage. There is no need for maintenance personnel to climb high places, which reduces the risk of operation, is convenient to carry and use, and improves the inspection efficiency. By setting replaceable contact heads with different structures, it is convenient to measure overhead lines in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the telescopic connecting rod of the utility model.

[0015] Figure 3 It is a schematic diagram of the base connection structure of the utility model.

[0016] In the figure: 1. replaceable contact head; 11. Y-shaped metal conductor contact head; 12. barbed hook-shaped metal conductor contact head; 13. conical pointed metal conductor contact head; 14. inverted L-shaped metal conductor contact head; 2. base; 21. threaded hole; 3. soft copper wire; 4. retractable connecting rod; 41. round tube; 42. thread; 43. copper wire jack; 5. wire reel; 6. handle; 7. mounting slot; 8. threaded connecting rod. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, the utility model provides a technical solution: a low-voltage overhead distribution network leakage inspection device, including a retractable connecting rod 4, the top and bottom of the retractable connecting rod 4 are respectively connected to a replaceable contact head 1 and a handle 6, the handle 6 is provided with a mounting groove 7, a low-voltage test pen is installed in the mounting groove 7, and the low-voltage test pen and the replaceable contact head 1 are electrically connected through a soft copper wire 3; the utility model installs the replaceable contact head 1 on the top of the retractable connecting rod 4 and the low-voltage test pen at the bottom of the retractable connecting rod 4, so that the inspection personnel can perform the leakage measurement of the overhead line on the ground, and can quickly and intuitively check whether the low-voltage distribution equipment has leakage, without the need for maintenance personnel to climb high places, reducing the risk of operation, and convenient to carry and use, and improving the inspection efficiency; by setting replaceable contact heads 1 with different structures, it is convenient to measure the overhead lines in different scenarios.

[0018] Among them, the replaceable contact head 1 includes a Y-shaped metal conductor contact head 11, a barbed metal conductor contact head 12, a conical pointed metal conductor contact head 13 and an inverted L-shaped metal conductor contact head 14; a soft metal filament shaped like dust is welded on the outer end of the inverted L-shaped metal conductor contact head 14; the Y-shaped metal conductor contact head 11 can be used to measure whether the crossarm and its iron accessories have leakage; the barbed metal conductor contact head 12 can be used to measure whether the insulated wires and insulated cables have damage and leakage; the conical pointed metal conductor contact head 13 can be used to measure whether there is leakage at a small point; the inverted L-shaped metal conductor contact head 14 and the soft metal filament welded on its outer end can be used to measure whether there is leakage in a large range.

[0019] The Y-shaped metal conductor contact head 11 , the barbed hook-shaped metal conductor contact head 12 , the conical tip metal conductor contact head 13 and the inverted L-shaped metal conductor contact head 14 are all provided with a threaded connecting rod 8 at the bottom.

[0020] like Figure 2As shown, the telescopic connecting rod 4 is composed of four sections of round tubes 41 that are movably connected, and the total length is about 8m when fully extended; the four sections of round tubes 41 are all made of lightweight and high-strength fiberglass, and have good insulation and elasticity; the round tube 41 at the top is provided with a thread 42, and the round tube 41 at the bottom is connected to the handle 6.

[0021] like Figure 3 As shown, the telescopic connecting rod 4 and the replaceable contact head 1 are connected through the base 2, and the base 2 is provided with threaded holes 21 at the top and bottom. The base 2 is connected to the round tube 41 at the top of the telescopic connecting rod 4 through the threaded hole 21 at the bottom, and the Y-shaped metal conductor contact head 11 or the barbed hook-shaped metal conductor contact head 12 or the conical pointed metal conductor contact head 13 or the inverted L-shaped metal conductor contact head 14 is connected to the threaded hole 21 at the top of the base 2 through the bottom threaded connecting rod 8.

[0022] Among them, a wire take-up drum 5 is also provided on the telescopic connecting rod 4; through the wire take-up drum 5, the soft copper wire 3 can be wound on the wire take-up drum 5 when the soft copper wire 3 is not in use, thereby improving the portability of the device.

[0023] Among them, the top of the surface of the topmost circular tube 41 of the four sections of circular tubes 41 and the bottom of the surface of the bottommost circular tube 41 of the four sections of circular tubes 41 are both provided with copper wire jacks 43, a conductive copper sheet is provided in the base 2, the conductive copper sheet is connected to the threaded holes 21 at the top and bottom of the base 2, the threaded holes 21 at the top and bottom of the base 2 are all made of conductive materials, and the threaded connecting rods 8 provided at the bottom of the Y-shaped metal conductor contact head 11, the barbed metal conductor contact head 12, the conical pointed metal conductor contact head 13 and the inverted L-shaped metal conductor contact head 14 are all made of conductive materials;

[0024] The handle 6 is made of insulating material and has a conductive copper sheet built therein. The conductive copper sheet connects the low-voltage electrician's pen and a copper wire jack 43 at the bottom of the bottom circular tube 41 of the four-section circular tube 41 .

[0025] In summary, the workflow of the utility model is as follows: when in use, the base 2 is installed on the top of the telescopic connecting rod 4, and then a replaceable contact head 1 suitable for the current detection scene is selected and installed on the base 2. In this embodiment, an inverted L-shaped metal conductor contact head 14 is selected as an example. After the inverted L-shaped metal conductor contact head 14 is installed, the two ends of the soft copper wire 3 are respectively inserted into the two copper wire jacks 43 on the telescopic connecting rod 4 (in actual operation, metal connectors can be installed at both ends of the soft copper wire 3, and it is more convenient to use the metal connectors to insert into the copper wire jacks 43) , so that the soft copper wire 3 electrically connects the low-voltage test pen in the handle 6 and the inverted L-shaped metal conductor contact head 14, and the installation of the device is completed. Then, the telescopic connecting rod 4 is stretched to an appropriate length (in this embodiment, the length of the soft copper wire 3 is greater than the longest length of the telescopic connecting rod 4), and then the handle 6 is grasped, and the telescopic connecting rod 4 is moved to move the inverted L-shaped metal conductor contact head 14 to the measuring point for testing. The test situation is observed through the low-voltage test pen on the handle 6. If voltage is displayed on the low-voltage test pen, it means that there is leakage at the measuring point.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low voltage overhead distribution network leakage detection device, comprising a retractable connecting rod (4), characterized in that: The top and bottom of the telescopic connecting rod (4) are respectively connected to the replaceable contact head (1) and the handle (6); the handle (6) is provided with a mounting groove (7); a low-voltage electrician test pen is installed in the mounting groove (7); the low-voltage electrician test pen and the replaceable contact head (1) are electrically connected via a soft copper wire (3).

2. A low voltage overhead distribution network leakage detection device according to claim 1, characterized in that: The replaceable contact head (1) comprises a Y-shaped metal conductor contact head (11), a barbed hook-shaped metal conductor contact head (12), a conical tip metal conductor contact head (13) and an inverted L-shaped metal conductor contact head (14); a soft metal filament is welded to the outer end of the inverted L-shaped metal conductor contact head (14).

3. A low voltage overhead distribution network leakage detection device according to claim 2, characterized in that: The bottoms of the Y-shaped metal conductor contact head (11), the barbed hook-shaped metal conductor contact head (12), the conical tip metal conductor contact head (13) and the inverted L-shaped metal conductor contact head (14) are all provided with threaded connecting rods (8).

4. A low voltage overhead distribution network leakage detection device according to claim 3, characterized in that: The telescopic connecting rod (4) is composed of four sections of round tubes (41) movably connected, and the four sections of round tubes (41) are all made of light and high-strength glass fiber reinforced plastics. The round tube (41) at the top is provided with a thread (42), and the round tube (41) at the bottom is connected to the handle (6).

5. A low voltage overhead distribution network leakage detection device according to claim 4, characterized in that: The telescopic connecting rod (4) and the replaceable contact head (1) are connected via a base (2); the base (2) is provided with threaded holes (21) at the top and bottom; the base (2) is connected to a round tube (41) at the top of the telescopic connecting rod (4) via the threaded hole (21) at the bottom; a Y-shaped metal conductor contact head (11) or a barbed hook-shaped metal conductor contact head (12) or a conical tip metal conductor contact head (13) or an inverted L-shaped metal conductor contact head (14) is connected to the threaded hole (21) at the top of the base (2) via a threaded connecting rod (8) at the bottom.

6. A low voltage overhead distribution network leakage detection device according to claim 1, characterized in that: A wire take-up reel (5) is also provided on the telescopic connecting rod (4).

7. A low voltage overhead distribution network leakage detection device according to claim 5, characterized in that: The top of the surface of the topmost circular tube (41) of the four sections of circular tubes (41) and the bottom of the surface of the bottommost circular tube (41) of the four sections of circular tubes (41) are both provided with copper wire jacks (43); a conductive copper sheet is provided inside the base (2); the conductive copper sheet is connected to the threaded holes (21) at the top and bottom of the base (2); the threaded holes (21) at the top and bottom of the base (2) are all made of conductive material; the threaded connecting rods (8) provided at the bottom of the Y-shaped metal conductor contact head (11), the barbed metal conductor contact head (12), the conical tip metal conductor contact head (13) and the inverted L-shaped metal conductor contact head (14) are all made of conductive material.

8. A low voltage overhead distribution network leakage detection device according to claim 7, characterized in that: The handle (6) is made of insulating material and has a conductive copper sheet built therein. The conductive copper sheet connects the low-voltage electrician's pen and a copper wire jack (43) at the bottom of the bottom circular tube (41) of the four-section circular tube (41).

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